Washington Department of Fish and Wildlife.
Connecticut Agricultural Experiment Station. Plant Disease Information Office.
University of Connecticut. Department of Plant Science and Landscape Architecture.
Oklahoma State University. Department of Entomology and Plant Pathology.
Note: Maps of potential range expansion for the red imported fire ant in Oklahoma and the United States
University of Connecticut. Connecticut Invasive Plant Working Group.
Washington State Department of Agriculture.
Missouri Department of Conservation.
Washington State Noxious Weed Control Board.